Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
  • C09B62/44—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring
  • C09B62/4401—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring with two or more reactive groups at least one of them being directly attached to a heterocyclic system and at least one of them being directly attached to a non-heterocyclic system
  • C09B62/4424—Azo dyes
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
  • C09B62/02—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group directly attached to a heterocyclic ring
  • C09B62/20—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group directly attached to a heterocyclic ring to a pyrimidine ring
  • C09B62/24—Azo dyes
  • C09B62/25—Disazo or polyazo dyes
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
  • C09B62/44—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring
  • C09B62/4401—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring with two or more reactive groups at least one of them being directly attached to a heterocyclic system and at least one of them being directly attached to a non-heterocyclic system
  • C09B62/4403—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring with two or more reactive groups at least one of them being directly attached to a heterocyclic system and at least one of them being directly attached to a non-heterocyclic system the heterocyclic system being a triazine ring
  • C09B62/4411—Azo dyes
  • C09B62/4415—Disazo or polyazo dyes
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
  • C09B62/44—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring
  • C09B62/503—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring the reactive group being an esterified or non-esterified hydroxyalkyl sulfonyl or mercaptoalkyl sulfonyl group, a quaternised or non-quaternised aminoalkyl sulfonyl group, a heterylmercapto alkyl sulfonyl group, a vinyl sulfonyl or a substituted vinyl sulfonyl group, or a thiophene-dioxide group
  • C09B62/507—Azo dyes
  • C09B62/513—Disazo or polyazo dyes

Definitions

• the present invention relates to the field of fiber-reactive dyes.
• Black-dyeing mixtures of fiber-reactive dyes are known from U.S. Patents Nos. 5,445,654 and 5,611,821 as well as from Korean Patent Application Publication No. 94-2560.
• Deep black dye mixtures are known, for example, from Japanese Patent Application Publication Sho-58-160 362 which are based on a navy-blue disazo dye and an orange monoazo dye.
• these dye mixtures have some deficiencies.
• dye mixtures comprising an amount of from 40 to 95% by weight of one or more disazo dyes of the general formula (1) and from 1 to 60% by weight of one or more disazo dyes of the general formula (2) based on the dye mixture.
• dye mixtures comprising an amount of from 60 to 80 % by weight of one or more disazo dyes of the general formula (1) and from 20 to 40 % by weight of one or more disazo dyes of the general formula (2) based on the dye mixture.
• sulfo are groups of the formula -SO 3 M
• thiosulfato groups are groups of the formula -S-SO 3 M
• carboxy groups are groups of the formula -COOM
• phosphato groups are groups of the formula -OPO 3 M 2
• sulfato groups are groups of the formula -OSO 3 M , in which M is defined as above.
• the dye mixtures according to the present invention may also comprise one or more monoazo dye of the general formulae (7) or (8) in up to 5 % by weight: wherein M, R 3 , R 4 , and L 2 are as defined above.
• the dye mixtures may contain up to about 15 % by weight of a commercially available red reactive dyestuff.
• These shading components are well known in the literature and can be synthesized by the standard methods. They are generally added as shading components. Examples of these are in particular dyes of the formulas (I), (II) or (III) wherein
• the dyes of the general formulae (1), (2), (7), (8), (I), (II), in particular if those corresponding to the same general formula, have the same chromophore, can have, within the meaning of Y, structurally different fiber-reactive groups -SO 2 -Y.
• the dye mixture can contain dyes of the same chromophore conforming to the formula (1) and dyes of the same chromophore conforming to formula (2) and optionally likewise of the general formula (7) and (8) in which the fiber-reactive groups -SO 2 -Y are partly vinylsulfonyl groups and partly groups in which Y is a ⁇ -ethyl substituted group as defined above, such as ⁇ -chloroethylsulfonyl, ⁇ -thiosulfatoethylsulfonyl or, preferably, ⁇ -sulfatoethylsulfonyl groups.
• the proportion of the respective vinylsulfonyl dye to the respective dye with Y being a ⁇ -ethyl substituted group as defined above, such as a ⁇ -chloro- or ⁇ -thiosulfato- or ⁇ -sulfatoethyl-sulfonyl dye, will be up to about 30 mol-%, based on the respective dye chromophore.
• the dye mixtures of the invention can be present as a preparation in solid or liquid (dissolved) form.
• solid form they generally contain the electrolyte salts customary in the case of water-soluble and in particular fiber-reactive dyes, such as sodium chloride, potassium chloride and sodium sulfate, and also the assistants customary in commercial dyes, such as buffer substances capable of establishing a pH in aqueous solution between 3 and 7, such as sodium acetate, sodium borate, sodium bicarbonate, sodium citrate, sodium dihydrogenphosphate and disodium hydrogenphosphate, small amounts of siccatives or, if they are present in liquid, aqueous solution (including the presence of thickeners of the type customary in print pastes), substances which ensure the permanence of these preparations, for example mold preventatives.
• buffer substances capable of establishing a pH in aqueous solution between 3 and 7, such as sodium acetate, sodium borate, sodium bicarbonate, sodium citrate, sodium dihydrogenphosphate and disodium hydrogenphosphate, small amounts
• the dye mixtures take the form of dye powders, they contain, as a rule, 10 to 60 % by weight, based on the dye powder or preparation, of a strength-standardizing colorless diluent electrolyte salt, such as those mentioned above. These dye powders may in addition contain the above mentioned buffer substances in a total amount of up to 10 %, based on the dye powder.
• the total dye content of these aqueous solutions is up to about 75 % by weight, the electrolyte salt content of these aqueous solutions preferably being below 10 % by weight, based on the aqueous solutions (liquid preparations) can in general contain the above mentioned buffer substances in an amount of up to 10 % by weight, preferably up to 5 % by weight.
• the disazo dyes of the general formula 2 are new if the amide group is in the 6 position relative to the hydroxyl group and the -SO 3 M group is in the 5 position relative to the hydroxyl group, as given in general formula (2-1), or if the amide group is in 7 position and the -SO 3 M group is in position 6 relative to the hydroxyl group, as given in general formula (2-2) wherein
• the dye mixtures of the invention can be obtained in a conventional manner, for instance by mechanically mixing the individual dyes in the required proportions or by synthesis by means of the customary diazotization and coupling reactions using appropriate mixtures of the diazo and coupling components in a manner familiar to those skilled in the art and the necessary proportions.
• One option is for example to prepare aqueous suspensions of the coupling components 1-amino-8-naphthol-3,6-disulfonic acid and for example 1-hydroxy-3,5-disulfo-6-N-(1 ',3'-diketobutyl)-naphtylamine, and as diazo components, aniline compounds of the formula (9).
• the dye mixture can be produced by diazotizing 4-( ⁇ -sulfatoethylsulfonyl)-aniline (9) in a conventional manner in a strongly acid medium and then carrying out the coupling reaction of the 1-amino-8-napthol-3,6-disulfonic acid with the diazo component at a pH below 1.5 to form the compound (7).
• the second coupling reaction with the monoazo dye (7) giving the disazo dyes conforming to the formula (1) is carried out at a pH between 3 and 6.5.
• the coupling reaction to form the dye conforming to the general formula (2) is carried out at a pH between 1 and 6.5.
• the inventive dyestuff mixture can be isolated from the solution in the conventional manner, for example by salting out with an electrolyte salt, such as sodium chloride or potassium chloride, or by spray-drying.
• the acetoacetylated coupling agents employed are readily obtained by reaction of the appropiately substituted naphtylamines with an excess of 5-200 % of diketene in aqueous solution between 0-60 °C, preferably between 30-50 °C and at a pH between 3 and 11 preferably at pH 4 to 8.
• the resulting acetoacetylated products can subsequently be used directly for the diazo coupling reaction or can be isolated by conventional salting out or spray drying. If the reaction solutions are used directly, excess acylating agent can be removed by heating to approximately 80 °C.
• Dyes of the general formula (2) wherein the azo moieties are of a different structure are prepared preferably by diazotizing the aromatic amine having the structure W-NH 2 wherein W is as defined above and coupling the resulting diazo-compound to the naphtylamine of the formula (10) wherein M, R 11 and n are defined as above and then acetoacetylating the intermediate as described above with subsequent coupling with a second diazo at the 1,3-diketo moiety.
• the dye mixtures of the instant invention are well suitable for dyeing (which includes printing) hydroxyl- and/or carboxamido-containing fiber materials by the application and fixing methods numerously described in the art for fiber-reactive dyes, in deep black shades with good color build-up and good wash-off in respect of unfixed dye portions. Moreover, the dyeings obtained show improved wash-fastness.
• the present invention therefore also provides for use of the inventive dye mixtures for dyeing (including printing) hydroxyl- and/or carboxamido-containing fiber materials and processes for dyeing such fiber materials and processes for dyeing such materials using a dye mixture according to the invention by applying the dye mixture to the substrate in dissolved form and fixing the dyes on the fiber by the action of an alkali or by heating or both.
• Hydroxyl-containing materials are natural or synthetic hydroxyl-containing materials, for example cellulose fiber materials, including in the form of paper, or their regenerated products and polyvinyl alcohols.
• Cellulose fiber materials are preferably cotton but also other natural vegetable fibers, such as linen, hemp, jute and ramie fibers; regenerated cellulose fibers are for example staple viscose and filament viscose.
• Carboxamido-containing materials are for example synthetic and natural polyamides and polyurethanes, in particular in the form of fibers, for example wool and other animal hairs, silk, leather, nylon-6,6, nylon-6, nylon-11, and nylon-4.
• the dye mixtures of the invention is by generally known processes for dyeing and printing fiber materials by the known application techniques for fiber-reactive dyes. Since the dyes of the dye mixtures according to the invention are highly compatible with one another, the dye mixtures of the invention are also advantageously useful in exhaust dyeing processes. Applied in this way for example to cellulose fibers from a long liquor ratio at temperatures between 40 and 105°C, optionally at temperatures up to 130°C, under superatmospheric pressure, and optionally in the presence of customary dyeing assistants with the use of acid-binding agents and optionally neutral salts, such as sodium chloride or sodium sulfate, they produce dyeings in very good color yields with excellent color build-up and consistent shade.
• One possible procedure is to introduce the material into the warm bath, gradually heat the bath to the desired dyeing temperature, and complete the dyeing process at that temperature.
• the neutral salts which speed up the exhaustion of the dyes can also if desired not be added to the bath until the actual dyeing temperature has been reached.
• the conventional printing processes for cellulose fibers which can either be carried out in single-phase, for example by printing with a print paste containing sodium bicarbonate or some other acid-binding agent and the colorant, and subsequent steaming at from 100 to 103°C, or in two phases, for example by printing with a neutral or weakly acid print paste containing the colorant and subsequent fixation either by passing the printed material through a hot electrolyte-containing alkaline bath or by overpadding with an alkaline electrolyte-containing padding liquor and subsequent batching of this treated material or subsequent steaming or subsequent treatment with dry heat, produce strong prints with well defined contours and a clear white ground. Changing fixing conditions has only little effect on the outcome of the prints.
• the hot air used in dry heat fixing by the customary thermofix processes has a temperature of from 120 to 200°C.
• the customary steam at from 101 to 103°C, it is also possible to use superheated steam and high pressure steam at up to 160°C.
• Acid-binding agents responsible for fixing the dyes to cellulose fibers are for example water-soluble basic salts of alkali metals and of alkaline earth metals of inorganic or organic acids, and compounds which release alkali when hot.
• alkali metal hydroxides and alkali metal salts of weak to medium inorganic or organic acids the preferred alkali metal compounds being the sodium and potassium compounds.
• These acid-binding agents are for example sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, potassium carbonate, sodium formate, sodium dihydrogenphosphate and disodium hydrogenphosphate.
• the dyeings of polyurethane and polyamide fibers are customarily carried out from an acid medium.
• the dyebath may contain for example acetic acid and/or ammonium sulfate and/or acetic acid and ammonium acetate or sodium acetate to bring it to the desired pH.
• customary leveling assistants for example based on a reaction product of cyanuric chloride with three times the molar amount of an aminobenzenesulfonic acid or aminonaphthalenesulfonic acid or based on a reaction product of for example stearylamine with ethylene oxide.
• the material to be dyed is introduced into the bath at a temperature of about 40°C and agitated therein for some time, the dyebath is then adjusted to the desired weakly acid, preferably weakly acetic acid, pH, and the actual dyeing is carried out at temperature between 60 and 98°C.
• the dyeings can also be carried out at the boil or at temperatures up to 120°C (under superatmospheric pressure).
• the disazo compound according to the invention of the formula is isolated. It has very good fiber-reactive dyestuff properties and dyeing properties on fiber materials mentioned in the description, in particular cellulose fiber materials, such as cotton, in orange shades with good fastness properties and a very low dependence of shade and strengths on the dyeing temperature.
• the inventive disazo compound obtained has the formula
• the compound of formula (R) is isolated by spray drying. It has good fiber-reactive dyestuff properties and dyes the fiber materials mentioned in the description, in particular cellulose fiber materials, such as cotton, in dull scarlet shades with good fastness properties.
• the coupling compound used to prepare the dyes mentioned in the examples (V) to (Y), was prepared in a way analogously to example 1 a.
• the dyes (V) to (Y) were prepared analogously to examples 1 and 2.
• the resulting dye mixture according to the invention when employed according to the application and fixing methods customary in the art for fiber-reactive dyes, produces for example on cellulose fiber materials dyeings and prints in deep black shades.

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• 2001
  • 2001-12-21 EP EP06110334A patent/EP1669416A1/de not_active Withdrawn

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